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Marble
Marble and natural stones
Tufa
Synthetic jewels, uncut
Synthetic jewels, cut
Synthetic jewels for scales
Synthetic jewels for compasses
Synthetic jewels for meters
Precious jewels for watches
Precious jewels for precision instruments
Jewels with holes, industrial
Cap jewels for watches and instruments
Balls, precision, sapphire, ruby and agate, for ball-point pens
Styluses (needles), sapphire, for record players
Needles, sapphire, for cutting gramophone records
Thread guides, natural and synthetic precious stone, for the textile industry
Watch jewel working services
Jewel mounting and setting services for instrument, clock and watch movements
